Stop motion attachment for a knitting machine



Oct. 9 1956 v. A. HAUBERG 2,765,542

STOP MOTION ATTACHMENT FOR A KNITTING MACHINE Filed Sept. 22, 1955 2 Sheets-Sheet 1 INVENTQR ATTORNEYS ct. 9, 1956 v; A. HAUBERG 2,765,642

STOP MOTION ATTACHMENT FOR A KNITTING MACHINE Filed Sept. 22, 1955 2 Sheets-Sheet 2.

, ATTORNEYS.

Unite STOP MOTION ATTAC i 1 NT FOR A KNITTING MACHINE This invention relates to a stop motion attachment for a knitting machine.

An object of this invention is to provide a stop motion device for mounting on a knitting machine and for connection with the present stop motion device which is conventional and which may be either of a mechanical or electrical construction.

Another object of this invention is to provide a stop motion device for stopping the knitting machine when a flaw occurs in the knitted fabric.

A further object of this invention is to provide a stop motion device which can easily be set after effectively stopping the machine.

A further object of this invention is to provide a stop motion device which will be efiective for different kinds of fabric and can be secured to various types of knitting machines.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details of construction and combinations of parts, hereinafter more fully described and pointed out in the claim, it being understood that changes may be made in the construction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawings:

Figure 1 is an end elevation of a conventional fabric knitting machine having a stop motion device constructed according to an embodiment of this invention mounted thereon and connected with the conventional stop motion device at present secured to the machine.

Fig. 2 is a detail side elevation of the attachment.

Fig. 3 is a fragmentary sectional view taken on line 33 of Fig. 2.

Fig. 4 is a sectional view Fig. 2.

Fig. 5 is a sectional view taken on line 5-5 of Fig. 2.

Referring to the drawings, the numeral designates generally a conventional knitting machine which includes a pair of yarn combs 11 and a dial comb block 12. The machine 10 also includes a stop motion device 13 which is of conventional construction and at present secured to the cylinder 14. The knitted fabric 15 moves from the end of cylinder ring 16, and when a flaw or defect as indicated at 17, occurs in the fabric 15 the machine must be stopped so that flaw 17 will not be repeated. In order to provide a means for stopping the operation of the machine, I have provided a feeler 18 which is formed at its inner end with a hook 19. The feeler 18 is also formed with a rounded nose 20 adapted to slidably ride over the surface of the fabric 15. The feeler 18 is secured to a pin 21 which is loosely mounted in a cylindrical housing 22. The housing 22 is formed with a lower closed end 23 having a transverse slot 24 through which the feeler 18 loosely engages. The pin 21 is formed with a reduced diameter shank 25 which is slidably disposed through a bushing 26. The bushing 26 taken on line 44 of States Patent 0 bears at its inner end against a spring 27 which bears at its lower end against a shoulder 28 formed at the upper end of pin 21. The cylindrical housing 22 is formed at its upper end with a collar 29 through which a set screw 30 is threaded for locking the bushing 26 in its adjusted position. The housing 22 includes a rightangular bushing 22, and a shaft 31 formed of spaced section 31 and 31 is secured in bushing 22'. The adjacent or confronting ends of the shaft sections 31 and 31 are spaced apart a distance sufiicient to permit pin 21 to slidably engage therebetween. The inner end of shaft section 31 is rockably mounted in bearing boss 32. A pair of collars 33 and 34 are secured by set screws 35 and 36 respectively, to the shaft 31 on opposite ends of bearing 32. The bearing 32 is carried by an L-shaped support 37 which is formed with a long base leg 38 having an elongated slot 39 through which a screw 40 extends and the screw 40 is threaded into the cam block 12. The shaft 31 is held against undue free rotation by means of a friction pin 41 carried by a screw 42. The pin 41 and the screw 42 are disposed in a bushing 43 which is threaded into the bearing 32 and extends at right angles to the shaft 31. A lock nut 44 is threaded on the screw 42 for locking the friction pin 41 in adjusted position. The shaft 31 has secured to its outer end a right-angularly disposed arm 45 which is adjustably fixed on the shaft 31 by means of a set screw 46. The lower end of arm 45 is provided with a slot 47 within which one end of a longitudinally curved link 48 is loosely mounted. A pivot pin 49 extends through the arm 45 and the adjacent end of link 48. The opposite end of link 48 is connected as at 50 to the stop motion device 13.

In the use and operation of this device the rounded nose 20 of feeler 18 is adapted to contact fricticnally with the surface of the knitted fabric 15, as shown in Fig. 4. The spring 27 which is tensioned by the bushing 26 will yieldably hold the feeler 18 in contact with the fabric. When a flaw or hole occurs in the fabric 15, as indicated at 17, spring 27 will move feeler 18 downwardly into the hole 17 of the fabric and hook 19 will contact with the edge of the hole 17 so that as the fabric moves clockwise as viewed in Fig. 1, housing 22 will be rocked with shaft 31. Arms 45 will pull link 48 to the left, as viewed in Fig. l and stop motion 13 will then be set in motion to stop the operation of the machine. The stop motion device 13 may be either of the mechanical or electrical type.

What is claimed is:

In a knitting machine having a stop motion means, an attachment for rendering said stop motion means effective, comprising a feeler adapted to engage the fabric, a tubular housing about said feeler, said feeler proiecting from one end of said housing for contact with the fabric, means rockably supporting said housing, tensionable spring means in said housing constantly urging said feeler into contact with the fabric, means rockably supporting said housing, an arm fixed relative to said housing, and a link connecting said arm with said stop motion means, said feeler being formed with a rounded end for contact with the fabric and also formed with a hook adjacent said rounded end for hooking a flaw in the fabric and thereby rocking said housing and arm.

References Cited in the file of this patent UNITED STATES PATENTS 2,368,686 Sperzel Feb. 6, 1945 2,429,004 Wachsman Oct. 14, 1947 2,433,444 Eichinger Dec. 30, 1947 2,570,995 Vossen Oct. 9, 1951 2,571,211 Crawford et al Oct. 16, 1951 

